#18042: Asus T100TA: USB boot fails from detachable keyboard USB port or SATA
bay
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Reporter: Illen | Owner: nobody
Type: bug | Status: new
Priority: normal | Milestone: Unscheduled
Component: - General | Version: R1/Development
Keywords: | Blocked By:
Blocking: | Platform: All
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Can't boot from USB port on detachable keyboard or the internal SATA bay
(which uses an USB SATA adapter) on Asus T100TA. Booting from the microUSB
port on tablet appears to work, and USB devices on detachable keyboard
(keyboard/touchpad input, USB port and SATA adapter) are all working after
system boots. Also internal USB read-only storage for recovery appears to
be recognized during boot, apart from the microUSB port.
When switching the USB controller mode to EHCI, none of the USB devices
(on keyboard or even tablet itself) work and it's not possible to boot at
all. Since I can't obtain syslog from failed boot attempts and I don't
have keyboard input during boot, I will attach the videos (for xHCI and
for EHCI) of screen debug output and syslog from successful microUSB port
boot.
Used haiku-master-hrev56578-x86_gcc2h.
xHCI USB Controller:
{{{
device Serial bus controller (USB controller, XHCI) [c|3|30]
vendor 8086: Intel Corporation
device 0f35: Atom Processor Z36xxx/Z37xxx, Celeron N2000 Series USB xHCI
}}}
USB devices:
{{{/dev/bus/usb/0/0}}} - internal USB read-only recovery storage
{{{/dev/bus/usb/0/1}}} - USB drive on microUSB port on the tablet (where
USB boot works)
{{{/dev/bus/usb/0/2}}} - Detachable keyboard connected through proprietary
connector
{{{/dev/bus/usb/0/3/0}}} - USB drive on detachable keyboard USB port
(where USB boot doesn't work)
{{{/dev/bus/usb/0/3/1}}} - USB SATA adapter in detachable keyboard (where
USB boot doesn't work)
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Ticket URL: <https://dev.haiku-os.org/ticket/18042>
Haiku <https://dev.haiku-os.org>
The Haiku operating system.
